function?f=enframe（xwininc）
%ENframe?split?signal?up?into?（overlapping）?frames:?one?per?row.?F=（XWININC）
%
%	F?=?ENframe（XLEN）?splits?the?vector?X（:）?up?into
%	frames.?Each?frame?is?of?length?LEN?and?occupies
%	one?row?of?the?output?matrix.?The?last?few?frames?of?X
%	will?be?ignored?if?its?length?is?not?divisible?by?LEN.
%	It?is?an?error?if?X?is?shorter?than?LEN.
%
%	F?=?ENframe（XLENINC）?has?frames?beginning?at?increments?of?INC
%	The?centre?of?frame?I?is?X（（I-1）*INC+（LEN+1）/2）?for?I=12...
%	The?number?of?frames?is?fix（（length（X）-LEN+INC）/INC）
%
%	F?=?ENframe（XWINDOW）?or?ENframe（XWINDOWINC）?multiplies
%	each?frame?by?WINDOW（:）

%	???Copyright?（C）?Mike?Brookes?1997
%??????Version:?$Id:?enframe.mv?1.4?2006/06/22?19:07:50?dmb?Exp?$
%
%???VOICEBOX?is?a?MATLAB?toolbox?for?speech?processing.
%???Home?page:?http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
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%???This?program?is?free?software;?you?can?redistribute?it?and/or?modify
%???it?u